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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
# IMA_SUB -- Image arithmetic subtraction.
procedure ima_subs (im_a, im_b, im_c, a, b)
pointer im_a, im_b, im_c
short a, b
int len
pointer im[3], buf[3]
long v[IM_MAXDIM, 3]
int ima_nls()
begin
# Loop through all of the image lines.
im[1] = im_c
len = IM_LEN (im[1], 1)
call amovkl (long(1), v, 3 * IM_MAXDIM)
# If imagea is constant then read imageb. Do a vector/scalar
# subtraction and then negate the result.
if (im_a == NULL) {
im[2] = im_b
while (ima_nls (im, buf, v, 2) != EOF) {
if (a != 0) {
call asubks (Mems[buf[2]], a, Mems[buf[1]], len)
call anegs (Mems[buf[1]], Mems[buf[1]], len)
} else
call anegs (Mems[buf[2]], Mems[buf[1]], len)
}
# If imageb is constant then read imagea and do a vector/scalar
# subtraction to imagec.
} else if (im_b == NULL) {
im[2] = im_a
while (ima_nls (im, buf, v, 2) != EOF) {
if (b == 0)
call amovs (Mems[buf[2]], Mems[buf[1]], len)
else
call asubks (Mems[buf[2]], b, Mems[buf[1]], len)
}
# Read imagea and imageb and do a vector subtraction into imagec.
} else {
im[2] = im_a
im[3] = im_b
while (ima_nls (im, buf, v, 3) != EOF)
call asubs (Mems[buf[2]], Mems[buf[3]], Mems[buf[1]], len)
}
end
procedure ima_subi (im_a, im_b, im_c, a, b)
pointer im_a, im_b, im_c
int a, b
int len
pointer im[3], buf[3]
long v[IM_MAXDIM, 3]
int ima_nli()
begin
# Loop through all of the image lines.
im[1] = im_c
len = IM_LEN (im[1], 1)
call amovkl (long(1), v, 3 * IM_MAXDIM)
# If imagea is constant then read imageb. Do a vector/scalar
# subtraction and then negate the result.
if (im_a == NULL) {
im[2] = im_b
while (ima_nli (im, buf, v, 2) != EOF) {
if (a != 0) {
call asubki (Memi[buf[2]], a, Memi[buf[1]], len)
call anegi (Memi[buf[1]], Memi[buf[1]], len)
} else
call anegi (Memi[buf[2]], Memi[buf[1]], len)
}
# If imageb is constant then read imagea and do a vector/scalar
# subtraction to imagec.
} else if (im_b == NULL) {
im[2] = im_a
while (ima_nli (im, buf, v, 2) != EOF) {
if (b == 0)
call amovi (Memi[buf[2]], Memi[buf[1]], len)
else
call asubki (Memi[buf[2]], b, Memi[buf[1]], len)
}
# Read imagea and imageb and do a vector subtraction into imagec.
} else {
im[2] = im_a
im[3] = im_b
while (ima_nli (im, buf, v, 3) != EOF)
call asubi (Memi[buf[2]], Memi[buf[3]], Memi[buf[1]], len)
}
end
procedure ima_subl (im_a, im_b, im_c, a, b)
pointer im_a, im_b, im_c
long a, b
int len
pointer im[3], buf[3]
long v[IM_MAXDIM, 3]
int ima_nll()
begin
# Loop through all of the image lines.
im[1] = im_c
len = IM_LEN (im[1], 1)
call amovkl (long(1), v, 3 * IM_MAXDIM)
# If imagea is constant then read imageb. Do a vector/scalar
# subtraction and then negate the result.
if (im_a == NULL) {
im[2] = im_b
while (ima_nll (im, buf, v, 2) != EOF) {
if (a != 0) {
call asubkl (Meml[buf[2]], a, Meml[buf[1]], len)
call anegl (Meml[buf[1]], Meml[buf[1]], len)
} else
call anegl (Meml[buf[2]], Meml[buf[1]], len)
}
# If imageb is constant then read imagea and do a vector/scalar
# subtraction to imagec.
} else if (im_b == NULL) {
im[2] = im_a
while (ima_nll (im, buf, v, 2) != EOF) {
if (b == 0)
call amovl (Meml[buf[2]], Meml[buf[1]], len)
else
call asubkl (Meml[buf[2]], b, Meml[buf[1]], len)
}
# Read imagea and imageb and do a vector subtraction into imagec.
} else {
im[2] = im_a
im[3] = im_b
while (ima_nll (im, buf, v, 3) != EOF)
call asubl (Meml[buf[2]], Meml[buf[3]], Meml[buf[1]], len)
}
end
procedure ima_subr (im_a, im_b, im_c, a, b)
pointer im_a, im_b, im_c
real a, b
int len
pointer im[3], buf[3]
long v[IM_MAXDIM, 3]
int ima_nlr()
begin
# Loop through all of the image lines.
im[1] = im_c
len = IM_LEN (im[1], 1)
call amovkl (long(1), v, 3 * IM_MAXDIM)
# If imagea is constant then read imageb. Do a vector/scalar
# subtraction and then negate the result.
if (im_a == NULL) {
im[2] = im_b
while (ima_nlr (im, buf, v, 2) != EOF) {
if (a != 0.0) {
call asubkr (Memr[buf[2]], a, Memr[buf[1]], len)
call anegr (Memr[buf[1]], Memr[buf[1]], len)
} else
call anegr (Memr[buf[2]], Memr[buf[1]], len)
}
# If imageb is constant then read imagea and do a vector/scalar
# subtraction to imagec.
} else if (im_b == NULL) {
im[2] = im_a
while (ima_nlr (im, buf, v, 2) != EOF) {
if (b == 0.0)
call amovr (Memr[buf[2]], Memr[buf[1]], len)
else
call asubkr (Memr[buf[2]], b, Memr[buf[1]], len)
}
# Read imagea and imageb and do a vector subtraction into imagec.
} else {
im[2] = im_a
im[3] = im_b
while (ima_nlr (im, buf, v, 3) != EOF)
call asubr (Memr[buf[2]], Memr[buf[3]], Memr[buf[1]], len)
}
end
procedure ima_subd (im_a, im_b, im_c, a, b)
pointer im_a, im_b, im_c
double a, b
int len
pointer im[3], buf[3]
long v[IM_MAXDIM, 3]
int ima_nld()
begin
# Loop through all of the image lines.
im[1] = im_c
len = IM_LEN (im[1], 1)
call amovkl (long(1), v, 3 * IM_MAXDIM)
# If imagea is constant then read imageb. Do a vector/scalar
# subtraction and then negate the result.
if (im_a == NULL) {
im[2] = im_b
while (ima_nld (im, buf, v, 2) != EOF) {
if (a != 0.0D0) {
call asubkd (Memd[buf[2]], a, Memd[buf[1]], len)
call anegd (Memd[buf[1]], Memd[buf[1]], len)
} else
call anegd (Memd[buf[2]], Memd[buf[1]], len)
}
# If imageb is constant then read imagea and do a vector/scalar
# subtraction to imagec.
} else if (im_b == NULL) {
im[2] = im_a
while (ima_nld (im, buf, v, 2) != EOF) {
if (b == 0.0D0)
call amovd (Memd[buf[2]], Memd[buf[1]], len)
else
call asubkd (Memd[buf[2]], b, Memd[buf[1]], len)
}
# Read imagea and imageb and do a vector subtraction into imagec.
} else {
im[2] = im_a
im[3] = im_b
while (ima_nld (im, buf, v, 3) != EOF)
call asubd (Memd[buf[2]], Memd[buf[3]], Memd[buf[1]], len)
}
end
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